On the other hand, though English 115 isn't a "difficult" class it shouldn't be scoffed at. There's over 20 pages of graded writing (besides the responses) and Murphy isn't such an easy grader.
===Any Intro Astronomy Course===
Easy, but mindless. If you do the work (and can stand returning to middle-school science) then it's a no-brainer.
Estimated weekly workload- Really only 2-4 hours before each test (2 per semester), plus 5 labs (of filling out worksheets) and 5 observing sessions (again filling out worksheets) each spread across the semester.